The main problem is, I cannot remember what site I was playing it on.
I last played it a couple months ago, but I don't know when it was developed. It was a single player (I think) spaceship game, top-down shooter. I remember you could buy different ships, weapons, and other modifications. You could travel to different zones on a huge map. There were big bases scattered around the whole map, and I believe there were some mining elements, mining asteroids or something. I didn't play it for very long, I don't think there was a main story line. I can't remember the name of the game.
If anyone could help me out, I would greatly appreciate it.
The only game with mining asteroids I recall here was not a topdown shooter. I can however recommend something similar if you'd like - Tyrian. No mining there, but everything else - topdown flying in space, buying different ships and upgrades - it's there.